CN202094868U - Switching circuit - Google Patents
Switching circuit Download PDFInfo
- Publication number
- CN202094868U CN202094868U CN2011201730198U CN201120173019U CN202094868U CN 202094868 U CN202094868 U CN 202094868U CN 2011201730198 U CN2011201730198 U CN 2011201730198U CN 201120173019 U CN201120173019 U CN 201120173019U CN 202094868 U CN202094868 U CN 202094868U
- Authority
- CN
- China
- Prior art keywords
- triode
- channel
- capacitor
- input signal
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 101150037009 pin1 gene Proteins 0.000 claims abstract description 7
- 101100520142 Caenorhabditis elegans pin-2 gene Proteins 0.000 claims description 6
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Electronic Switches (AREA)
Abstract
The utility model provides a switching circuit. An input signal (input 1) is connected to one selector channel pin1 of a channel gating IC after passing two capacitors C1 and C3 connected in series; an input signal (input 2) is connected to the other selector channel pin 2 of the channel gating IC after passing two capacitors C2 and C4 connected in series; a switch signal SW controls the channel switching of the channel gating IC; the switch signal is connected to the base electrode of a triode Q1 through a resistor R3; the emitting electrode of the triode Q1 is grounded and the collector electrode of that is connected to a middle contact point of the capacitors C1 and C3 connected in series; the middle contact point is connected to a power supply VCC through a resistor R1; the switch signal SW is further connected to the base electrode of a triode Q3 through a resistor R7; the emitting electrode of the triode Q3 is grounded and the collector electrode of the triode Q3is connected to the power supply VCC through a resistor R6; the collector electrode of the triode Q3 is also connected to the base electrode of a triode Q2 through a resistor R4, and the base electrode of the triode Q2 is also grounded through a resistor R5; the emitting electrode of a triode Q2 is grounded and the collector electrode of triode Q2 is connected to the middle contact point of the capacitors C2 and C4 connected in series; and the middle contact point is connected to the power supply VCC through a resistor R2. The switching circuit enables that the input signal carried out pre-selection before accessing into the channel gating IC, so as to reduce the crosstalk caused by unselected input signals to selected input signals, and realize that the non-gated channel signals no longer disturb gated channel signals.
Description
Technical field
The utility model relates to circuit handoff technique field, relates in particular to a kind of commutation circuit.
Background technology
When in the circuit a plurality of input signal being arranged, generally select for use alternative or multiselect one passage to switch the selection switching that the IC switch carries out passage.But, if frequency input signal is very high, be difficult to two-way or multiple signals are separated totally fully, always there is a small amount of not channel signal of gating to disturb the channel signal of gating.
The utility model content
For this reason, technical problem to be solved in the utility model is: a kind of commutation circuit is provided, and making not, the channel signal of gating no longer disturbs the channel signal of gating.
So, the utility model provides a kind of commutation circuit, this circuit comprises: input signal input1 is connected to the selector channel pin1 of passage gating IC after through two capacitor C that are one another in series 1 and capacitor C 3, input signal input2 is connected to another selector channel pin2 of described passage gating IC after through two capacitor C that are one another in series 2 and capacitor C 4, switching signal SW controls the switching channel of described passage gating IC, this switching signal is connected to the base stage of triode Q1 by resistance R 3, the grounded emitter of triode Q1, the collector electrode of triode Q1 is connected to the intermediate contact of the capacitor C 1 and the capacitor C 3 of series connection, this intermediate contact is connected to power supply VCC by resistance R 1, switching signal SW also is connected to the base stage of triode Q3 by resistance R 7, the grounded emitter of triode Q3, the collector electrode of triode Q3 is connected to power supply VCC by resistance R 6, the collector electrode of triode Q3 also is connected to the base stage of triode Q2 by resistance R 4, the base stage of triode Q2 is also by resistance R 5 ground connection, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected to the intermediate contact of the capacitor C 2 and the capacitor C 4 of series connection, and this intermediate contact is connected to power supply VCC by resistance R 2.
Wherein, described input signal input1 and input signal input2 are radiofrequency signal.
Wherein, described passage gating IC is alternative passage gating IC.
Commutation circuit described in the utility model by before input signal admission passage gating IC, has been carried out once preselectedly, has reduced not select input signal to selecting crosstalking of input signal, and making not, the channel signal of gating no longer disturbs the channel signal of gating.
Description of drawings
Fig. 1 is the described commutation circuit circuit diagram of the utility model embodiment.
Embodiment
Below, in conjunction with the accompanying drawings the utility model is described in detail.
As shown in Figure 1, present embodiment provides a kind of commutation circuit, this circuit comprises: input signal input1 is connected to the selector channel pin1 of passage gating IC after through two capacitor C that are one another in series 1 and capacitor C 3, input signal input2 is connected to another selector channel pin2 of described passage gating IC after through two capacitor C that are one another in series 2 and capacitor C 4, switching signal SW controls the switching channel pin3 of described passage gating IC, this switching signal is connected to the base stage of triode Q1 by resistance R 3, the grounded emitter of triode Q1, the collector electrode of triode Q1 is connected to the intermediate contact of the capacitor C 1 and the capacitor C 3 of series connection, this intermediate contact is connected to power supply VCC by resistance R 1, switching signal SW also is connected to the base stage of triode Q3 by resistance R 7, the grounded emitter of triode Q3, the collector electrode of triode Q3 is connected to power supply VCC by resistance R 6, the collector electrode of triode Q3 also is connected to the base stage of triode Q2 by resistance R 4, the base stage of triode Q2 is also by resistance R 5 ground connection, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected to the intermediate contact of the capacitor C 2 and the capacitor C 4 of series connection, and this intermediate contact is connected to power supply VCC by resistance R 2.
When switching signal SW was high level, triode Q3 was saturated, and triode Q2 ends, input signal input2 is by the selector channel pin2 of capacitor C 2, capacitor C 4 admission passage gating IC, at this moment, passage gating IC switching channel is selected selector channel pin2, and last signal is exported by switching channel pin3.
And when switching signal SW is high level, make that again triode Q1 is saturated, input signal input1 shorted to earth, input signal input1 is just almost nil at the selector channel pin1 of passage gating IC, so the output that input signal input1 can't disturbance switching passage pin3.
Otherwise when switching signal SW was low level, triode Q3 ended, triode Q2 is saturated, and input signal input1 is by the selector channel pin1 of capacitor C 1, capacitor C 3 admission passage gating IC, at this moment, passage gating IC switching channel selector channel pin1, last signal is exported by switching channel pin3.
And work as switching signal SW is the low level while, make that again triode Q2 is saturated, input signal input2 shorted to earth, input signal input2 is just almost nil at the selector channel pin2 of passage gating IC, so the output that input signal input2 can't disturbance switching passage pin3.
As seen, the key of above-mentioned commutation circuit just is, carried out once preselectedly before the input signal admission passage gating IC, can reduce greatly like this not select input signal to selecting crosstalking of input signal.
Above-mentioned input signal input1 and input signal input2 are radiofrequency signal.Certainly, above-mentioned commutation circuit also can be used for the switching of non-radio circuit, as is easy to generate the AV signal commutation circuit of interference.
The described passage gating of present embodiment IC is alternative passage gating IC.A plurality of if desired input channels, that just with multiselect one passage gating IC, is selected one the tunnel and enters the next stage treatment circuit.This under the principle of the described commutation circuit of present embodiment, is to be easy to realize that present embodiment is not done detailed description, and multiselect one passage gating IC uses for the switching of radio circuit is less generally speaking to those skilled in the art.
In sum, the described commutation circuit of present embodiment, preselected by before input signal admission passage gating IC, having carried out once, reduced not select input signal to selecting crosstalking of input signal, making not, the channel signal of gating no longer disturbs the channel signal of gating.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. commutation circuit, it is characterized in that, comprise: input signal input1 is connected to the selector channel pin1 of passage gating IC after through two capacitor C that are one another in series 1 and capacitor C 3, input signal input2 is connected to another selector channel pin2 of described passage gating IC after through two capacitor C that are one another in series 2 and capacitor C 4, switching signal SW controls the switching channel of described passage gating IC, this switching signal is connected to the base stage of triode Q1 by resistance R 3, the grounded emitter of triode Q1, the collector electrode of triode Q1 is connected to the intermediate contact of the capacitor C 1 and the capacitor C 3 of series connection, this intermediate contact is connected to power supply VCC by resistance R 1, switching signal SW also is connected to the base stage of triode Q3 by resistance R 7, the grounded emitter of triode Q3, the collector electrode of triode Q3 is connected to power supply VCC by resistance R 6, the collector electrode of triode Q3 also is connected to the base stage of triode Q2 by resistance R 4, the base stage of triode Q2 is also by resistance R 5 ground connection, the grounded emitter of triode Q2, the collector electrode of triode Q2 is connected to the intermediate contact of the capacitor C 2 and the capacitor C 4 of series connection, and this intermediate contact is connected to power supply VCC by resistance R 2.
2. commutation circuit according to claim 1 is characterized in that, described input signal input1 and input signal input2 are radiofrequency signal.
3. according to claim 1 or 2 described commutation circuits, it is characterized in that described passage gating IC is alternative passage gating IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201730198U CN202094868U (en) | 2011-05-27 | 2011-05-27 | Switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201730198U CN202094868U (en) | 2011-05-27 | 2011-05-27 | Switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094868U true CN202094868U (en) | 2011-12-28 |
Family
ID=45369908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201730198U Expired - Fee Related CN202094868U (en) | 2011-05-27 | 2011-05-27 | Switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094868U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009454A (en) * | 2013-03-01 | 2015-10-28 | 高通股份有限公司 | Switching fabric for embedded reconfigurable computing |
| CN109687600A (en) * | 2018-12-20 | 2019-04-26 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receive circuit and communication means and wireless power transmission systems |
-
2011
- 2011-05-27 CN CN2011201730198U patent/CN202094868U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105009454A (en) * | 2013-03-01 | 2015-10-28 | 高通股份有限公司 | Switching fabric for embedded reconfigurable computing |
| CN105009454B (en) * | 2013-03-01 | 2018-01-05 | 高通股份有限公司 | Switching construction for embedded Reentrant lines |
| CN109687600A (en) * | 2018-12-20 | 2019-04-26 | 广东美的白色家电技术创新中心有限公司 | Electronic device, wireless power transmission receive circuit and communication means and wireless power transmission systems |
| CN109687600B (en) * | 2018-12-20 | 2021-07-20 | 美的集团(上海)有限公司 | Electronic device, wireless power transmission receiving circuit, communication method and wireless power transmission system |
| US11909229B2 (en) | 2018-12-20 | 2024-02-20 | Guangdong Midea White Home Appliance Technology Innovation Center Co., Ltd. | Wireless power transmission receiving circuit, communication method, and wireless power transmission system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202094868U (en) | Switching circuit | |
| CN104917475A (en) | Adjustable gain power amplifier, gain adjusting method and mobile terminal | |
| CN105137260A (en) | Circuit for detecting the state of active antenna | |
| CN102710224B (en) | Multimode power amplifier and corresponding mobile communication equipment | |
| CN104753477A (en) | Power amplifier and gain switching circuit thereof | |
| CN104333335B (en) | Adaptive bipolar transistor power amplifier linearity biasing circuit | |
| CN105305990A (en) | Power control circuit of power amplifier | |
| CN203368444U (en) | Multi-range self-protection AD signal acquisition device | |
| CN203027214U (en) | Radio-frequency adjustable attenuator | |
| CN208939930U (en) | Broadband receiver radio frequency front-end device | |
| CN206164505U (en) | Analog signal modulate circuit of optimizing | |
| CN204168242U (en) | Self adaptation bipolar transistor power amplifier linearity biasing circuit | |
| CN204696446U (en) | A kind of drive circuit for laser module and there is the laser level of this drive circuit | |
| CN105116413A (en) | High-speed parallel acquisition system clock synchronization device | |
| CN202886881U (en) | Full-hardware startup and shutdown circuit | |
| CN103973261A (en) | High frequency and wide attenuation range active variable attenuator circuit | |
| CN104135233B (en) | Low-noise voltage-controlled oscillator biasing circuit and frequency source self-calibration method | |
| CN203590188U (en) | Switching circuit | |
| CN103631453A (en) | Signal receiving device of infrared touch frame | |
| CN205176120U (en) | Battery voltage acquisition circuit of low -power consumption | |
| CN209233797U (en) | A kind of X-band 12W power amplifier circuit | |
| CN204497559U (en) | A kind of high integration multichannel array fiber amplifier | |
| CN202889307U (en) | Online programming digital tuning frequency-hopping filter | |
| CN202750078U (en) | FM transmitter with low power and high sensitivity | |
| CN205066935U (en) | Realize device of whole uniformity that gains of multichannel photoelectric detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160527 |